CN1250582A - Locating method and arrangement - Google Patents

Locating method and arrangement Download PDF

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Publication number
CN1250582A
CN1250582A CN98802469A CN98802469A CN1250582A CN 1250582 A CN1250582 A CN 1250582A CN 98802469 A CN98802469 A CN 98802469A CN 98802469 A CN98802469 A CN 98802469A CN 1250582 A CN1250582 A CN 1250582A
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CN
China
Prior art keywords
terminal
base station
signal
location
transmitter
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Pending
Application number
CN98802469A
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Chinese (zh)
Inventor
韦勒·路图
蒂莫西·M·兰托尔莱宁
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Nokia Oyj
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Nokia Telecommunications Oy
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Application filed by Nokia Telecommunications Oy filed Critical Nokia Telecommunications Oy
Publication of CN1250582A publication Critical patent/CN1250582A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W64/00Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • G01S1/08Systems for determining direction or position line
    • G01S1/44Rotating or oscillating beam beacons defining directions in the plane of rotation or oscillation
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/08Position of single direction-finder fixed by determining direction of a plurality of spaced sources of known location

Abstract

The invention relates to a locating method and an arrangement for determining the location of a terminal (12) in a radio system comprising a plurality of base stations (10, 11) and terminals (12). At least two base stations (10, 11) with known locations transmit a signal used in locating the terminal (12), and the signals are transmitted in beams (13, 14) with directional antenna patterns and the direction of the beams (13, 14) is changed as a function of time. The terminal (12) determines the location of the base station (10, 11) and the transmission direction of the signal used in location determination by means of the beam (13, 14) transmitted by said at least two base stations (10, 11). Since the terminal (12) is located at the intersection of the beams (13, 14) of the base stations (10, 11) transmitting from known locations, the location of the terminal (12) can easily be determined. The solution takes multipath propagation into account.

Description

Localization method and device
The present invention relates to determine in wireless system a kind of localization method of terminal location, aforementioned wireless system comprises a plurality of base stations and terminal.
The invention still further relates to a kind of positioner of determining terminal location in wireless system, aforementioned wireless system comprises a plurality of base stations and terminal.
Typical mobile telephone system covers bigger geographic area, comprises a plurality of areas of coverage, i.e. sub-district, and each sub-district provides service by a base station usually.The size of sub-district differs greatly, and common and this regional call business amount matches.In the zone of heavy traffic density, cell size is usually than less regional little of call number.No matter cell size how, know that geographical position or direction that user terminal moves often are useful.
There are some diverse ways can determine the geographical position of terminal.Terminal positional information can be used for various objectives.If the user wishes that he or she can determine his or her position; Can determine to send the terminal location of urgent call to be helped; Perhaps can make call charging depend on the position.Can easily determine distance between terminal and the base station that it is communicated by letter according to propagation delay.Triangulation method is one of the most frequently used method, and the signal of wherein three or more base station measurement terminals is according to the position of the propagation delay computing terminal of these signals.This scheme is called as TA (timing advance) method.
In another kind of known arrangement, terminal receives clock and the location coordinate information be positioned near the base station the terminal from cellular system.Then, terminal is measured the time difference of the signal that receives from these base stations, determines its position according to the time difference that records with from the information that system receives.
But, these known methods, triangulation method for example, problem be, locating terminal very accurately, the positional information that obtains need can't be used to the application of accurate geographic parameter.
Therefore, an object of the present invention is to provide the device of a kind of method and this method of realization, make the problems referred to above be solved, can accurately determine the position of terminal.
This realizes by disclosed method in the foreword, the method is characterized in that it comprises following method step: the base station of at least two known location sends the signal that is used for locating terminal; These signals send in beam with directional antenna pattern (pattern); The direction of beam changes in time; Terminal is measured the transmission of described at least two base stations, and the signal that is used to locate is determined the position of described base station and the transmit direction of the signal that is used to locate according to measurement result, determine the position of terminal according to the position and the transmit direction of the signal that is used to locate of base station.
Apparatus of the present invention are characterised in that, the base station of at least two known location comprises sending being used for the signal of locating terminal, and has the transmitter of directional beam, and this transmitter changes the direction of beam in time; Terminal comprises the device that is used for measuring-signal in the receiver, and these signals are used for determining the angle of departure of the used signal of base station location and location, and wireless system comprises that the measurement of carrying out according to terminal determines the device of terminal location.
Method and apparatus of the present invention has a plurality of advantages.Can accurately determine terminal location and do not need bigger change in base station or the terminal software.The signaling traffic load of network portion is lighter in the wireless system.Device ratio of the present invention such as TA or OTD (observing the time difference) method is more accurate, does not need active call in the position fixing process.In addition, device of the present invention is all worked well at indoor and outdoors, and terminal can also be determined its position.In addition, can be easily and other known locations scheme combination according to the solution of the present invention.
Referring to accompanying drawing, describe the present invention in conjunction with the preferred embodiments in detail, in the accompanying drawings below
Fig. 1 a shows a kind of transient state in the embodiment of the invention;
Fig. 1 b shows a kind of transient state in the embodiment of the invention;
It is the situation of multipath transmisstion that Fig. 2 a shows the used signal in location;
Fig. 2 b shows the signal timing that is used to locate that terminal receives in the situation shown in Fig. 2 a;
Fig. 3 is the block diagram of terminal;
Fig. 4 is the block diagram of terminal; And
Fig. 5 is the block diagram of base station.
The solution of the present invention is particularly useful for the gsm wireless system, but also can be applied to other wireless system.
Let us is investigated method of the present invention on general level now.This scheme is applicable to the wireless system that comprises a plurality of base stations and terminal, and in the method, the base station of at least two known location sends the signal that is used for locating terminal, and these signals send in beam with directional antenna pattern.The continuous in time or discontinuous variation of the direction of beam.The function that changes direction can be the uniform speed rotation of real rule, periodic, pseudorandom or very at random.If the employing random orientation, then the deflection of beam can be selected at random, but during launching, this angle is always known.Terminal is measured at least two base stations transmissions, the time of reception of the signal that is used to locate.Because the location aware of base station, and because to mail to the angle of departure of terminal known in the base station, so can determine the position of terminal by the mode the same with triangulation.In this scheme of the present invention, suppose that between the measurement of the framing signal that different base station sent, this terminal does not move substantially owing to measure.
Can investigate the present invention by following example now, and do not abandon basic thought according to the present invention program, perhaps the present invention is limited to this scope: the base station is the used signal of positioning of rotating stably, at this moment, at the sub-district level beam is rotated around the base station, thereby the antenna radiation pattern direction of signal change in time.Because anglec of rotation speed ω is stable, so constantly during T, the beam direction in the initial rotation circle is ω T.But in the present invention program, when ensuing at least one rotation circle began, the orientation of beam also can change phase shift φ, in this case, the beam direction of moment T, promptly angle θ is θ=ω T+ φ.Beam is not preferably successively towards same direction in each circle.This is discontinuous, is particularly useful in the promptly discrete rotation, and not having the deflection θ of additional phase shift during T constantly in discrete rotation is θ=n Δ α, and wherein n is the integer index that increases in time, and Δ α is the Discrete Change of deflection.
Let us passes through Fig. 1 a to 4 The effect the solution of the present invention now.In the innovation scheme shown in Fig. 1 a and the 1b, base station 10 and 11 is sent, and the signal 13 and 14 that is used for locating terminal 12 is in the upper edge of direction shown in arrow terminal 10 and 11 rotations.Can for example on cartesian coordinate axes, determine the last known location of base station 10 and 11, make base station 10 be positioned at point (x 1, y 1), and base station 11 is positioned at point (x 2, y 2).At moment t=t 1, locating base station 10 used signal beams 14 point to the terminal 12 that is arranged in somewhere, beam 14 zone.Like this, the deflection of the framing signal 14 that sent of base station 10 is θ 1(t 1).Fig. 1 b shows t=t constantly 2The time situation, t constantly wherein 2Be different from t 1Like this, the framing signal beam 14 orientation angle θ of base station 11 2(t 2) terminal 12.In addition, base station 10 is at moment t 1Beam represent by the dotted line among Fig. 1 b.Therefore, according to measurement result, terminal 12 is arranged in represented beam 13 of Fig. 1 b vertical line and 14 common factor.Beam 13 and 14 main shaft are represented by the beam dotted line.
In order to determine the more accurate position of terminal, the density distribution or the similar parameter of terminal 12 measurement beam during a circle or multi-turn, the major axes orientation of generation beam.Utilize main shaft to determine the position of terminal 12 then, like this, terminal 12 is arranged in the common factor of the represented main shaft of Fig. 1 b dotted line.If the density distribution of measurement beam in a circle, then rotary speed must be quite slow.Like this, beam can for example 10 and 11 rotations around the base station in 36 second of arcs.If the width of beam is 10 °, then terminal has 1 second of arc approximately, in other words, 8 idle tdma slots in gsm system, i.e. 64 possible position pulses are in order to receive locating information.If terminal 12 uses 4 different base stations to position, then terminal 12 can receive 16 position pulses from each base station.Terminal 12 generates the density distribution of beam according to these 16 measurements of carrying out successively according to the order of sequence, and definite major axes orientation.
Rotary speed also can be omited height.In this case, the width of beam can be for example 20 °, and rotation can be dispersed, and wherein framing signal is jumped into 20 ° forward after sending each position pulse.Therefore, a whole circle will have 18 pulse trains, be slightly larger than 10 milliseconds.If terminal 12 only receives the position pulse string in idle tdma frame, then the reception of position pulse string and the angle of departure are independently of one another, thereby terminal can not receive the position pulse string in same time slot.Receive the position pulse string and will cause system mistake in same time slot, this mistake on average equals half of beam angle.In this case, terminal is also collected the statistical sample of the framing signal that the base station sent of sufficient amount, generates beam density according to measurement result and distributes, and determine main shaft according to distributing.
Under beam fast rotational situation, beam is at for example rotation one whole circle in about 4.6 milliseconds.Like this, the angular aperture of beam is preferably for example 45 °.The same with precedent, beam rotation angular aperture after sending each pulse train, promptly in this example 45 °.Therefore, beam promptly rotates around the base station during a tdma frame at 8 pulse trains.With specific interval, 120 ms intervals preferably change the deflection of beam, add deduct for example 2.5 °, receive the framing signal pulse to prevent terminal at any time from the same time slot of each deflection.According to this example, in a similar manner in every 18*120 millisecond=rotation of resetting signal bursts in 2.16 seconds, at this section in the period, terminal has preferably been collected 18 samples of each framing signal in 45 ° of angular apertures.Like this, can preferably determine density distribution with 2.5 ° precision.
In a preferred embodiment of the present invention, base station 10,11 sends the information of base station information and deflection θ by the used signal in location.Because the location aware of each base station 10,11, the deflection of the framing signal of at least two different base stations of utilization can be determined the position of terminal 12.
If base station 10,11 and terminal 12 are synchronous, thereby make the time of reception of signal and emission angle theta be relative to each other, then base station 10,11 can only send they self information by locating used signal.Base station information can be to be used for the Base transceiver Station Identity Code of locating base station 10,11, and this information can directly be base station position information also.
Network portion can be defined as comprising the other parts except terminal in the wireless system.If terminal 12 transmits its metrical information by wireless path to network portion, then network portion can be determined the position of terminal 12.In fact, can determine the position at for example base station controller.As a kind of possibility of determining the position in network portion, terminal also can be determined it self position.Especially in the gsm wireless system, locate used signal and can pass through BCCH (broadcast channel) channel and send, perhaps the BCCH channel can indicate which frequency and which time slot to be used for the location, the coordinate of base station what are (sign/coordinate) or the like.In this case, network sends the used signal of locating terminal in one or more time slots on a frequency.
Multipath transmisstion, promptly signal, causes going wrong in the wireless location system by the fact of a plurality of propagated to receiver from transmitter.The innovation scheme can reduce the influence of this problem, even can eliminate this problem.
The caused problem of multipath transmisstion can alleviate by for example following mode: terminal 12 is the used signal of measurement and positioning in a whole circle.Under Fig. 2 a situation, terminal 12 for example detects the signal of path 21 (reflection), the signal of path 22 (reflection), the signal of path 23 (directly, correct).Let us supposes that these only are terminals 12 at the used signal in location detected signal in base station 10 rotations 360 ° of used times.Problem is to find correct signal from detection signal (angle) 21,22 and 23.Terminal 12 for example knows that in GSM, the time difference between signal is the multiple (n of (during launching) time slot (0.577 millisecond) *0.577 millisecond).Generally speaking, the time difference between signal can be any known or preset time length.If the time between the received signal (the remainder time slot is long, i.e. 0.577 millisecond among the GSM) is long or shorter, then signal has passed through the distance of different length.Fig. 2 b has explained the situation of Fig. 2 a in detail, and wherein the moment of first signal, 21 arrival is set to the moment 0.Signal 22 then is for example in 3.1 (slot length unit) arrival constantly, and the 3rd signal 23 for example 7.9 arrives constantly.Terminal 21 can infer if signal 21 directly arrives, then all other signals 22 and 23 in advance or postpone and should equate.Signal 22 is than signal 21 slow (signal 22 should 3.0 arrive so that directly propagate constantly).23 of signals should 8.0 arrive constantly.But,, are signals (perhaps arriving) of directly propagating by the shortest reflection path so can infer signal 23 because signal 23 is more leading relatively than signal 21.(in GSM, 0.577 millisecond of slot length is corresponding to 173 kilometers.Therefore, the relative due in 7.9 of signal 23 does not mean that signal 23 should 7.0 arrive constantly, and it should postpone 0.9 time slot, because signal 23 should pass through 156 kilometers more, and this is impossible).Like this, by the relative time error (remainder slot length) between the framing signal that arrives in measurement and positioning beam rotation 360 ° of required time periods, terminal 12 can prevent multipath transmisstion and the caused problem of signal reflex.The due in of first received signal is set to the moment 0.If the signal of following does not comprise signal early, then first signal may be the most direct signal.If there is signal early, then having the signal that maximum time shifts to an earlier date is the most direct signal.
Fig. 3 shows the block diagram according to terminal of the present invention.This terminal comprises antenna 30, radio-frequency unit 31, demodulator 32, the device 33 of measurement and positioning signal and positioner 34.Radio-frequency unit 31 comprises the frequency mixer that received signal is multiplied by local oscillator frequencies, and the low pass filter that the signal that arrives is carried out filtering.Like this, the frequency with received signal is reduced to intermediate frequency.In addition, radio-frequency unit 31 can comprise the parts of adjusting automatic gain control, remains unchanged substantially by the automatic gaining controling signal value.With conversion of signals one-tenth numeral, balanced this signal generates corresponding to the code element that sends code element demodulator 32 according to prior art, and makes reception synchronously.The signal of demodulation is further propagated and is given the user.But the framing signal of demodulation propagates into framing signal measurement mechanism 33, and according to the innovation method, framing signal measurement mechanism 33 utilizes this signal to determine the position of terminal, the deflection of framing signal, even preferably determine density distribution.In the scheme according to Fig. 3 block diagram, the positioner 34 of terminal utilizes the deflection of base station location and framing signal to determine the position of this terminal self.Signal generally propagates into other position user and/or the wireless network from positioner 34.Positioner 34 also can be positioned at the network portion of wireless system.
Terminal shown in Figure 4 positions the measurement of signal, but then finish at other position of wireless network the location of terminal.This terminal comprises antenna 40, duplexer filter 41, the radio-frequency unit 42 of receiver, demodulator 43, the radio-frequency unit 44 of transmitter, the device 46 of modulator 45 and measurement and positioning signal.In receiver, the working method of this programme and terminal determine that the scheme of himself position is extremely similar.Antenna 40 receives framing signal.Duplexer filter 42 separate transmitter and receiver make them to work simultaneously.Therefore, the framing signal of reception also propagates into radio-frequency unit 42 from antenna 40 by duplexer filter 41, and the latter converts the radio frequency framing signal to intermediate frequency.The demodulation mode of framing signal is identical with the demodulator of Fig. 3 32.Framing signal is measured in measurement mechanism 46, determines for example time of reception of signal then.In addition, in the innovation scheme, the position of base station and deflection can be determined in measurement mechanism 46, but the position of base station and deflection also can be determined at other position of wireless system.Because in this embodiment, terminal is not measured the position of himself, so metrical information is sent to the modulator 45 of transmitter, the latter is with known modulator approach (PAM for example, PSK, FSK, QAM, CPM etc.) conversion of signals that will comprise numeric code becomes analog form.In addition, modulator 45 can be handled the frequency range of the signal of formation.Radio-frequency unit 44 comprises doubly takes advantage of frequency mixer into radio frequency with signal.The radio-frequency measurement signal propagates into antenna 40 by duplexer filter 41, and framing signal further propagates into for example base station controller by the base station from antenna 40, to generate location information of terminals.
Fig. 5 shows the necessary parts according to exemplary base station of the present invention.This base station comprises independently transmitter 101, is used to send the framing signal of terminal.Transmitter 101 comprises antenna 56, radio-frequency unit 57 and modulator 58.Antenna 56 can be by known way machinery or directed electronically.In the mechanical orientation process, antenna 56 physically rotates, and in the electronics orientation process, is contained in the phase place of the antenna element in the antenna 56 according to the known way controlling packet, thereby rotates the direction of beam.In different embodiments of the invention, the information content of the signal of input modulator 58 can be empty, perhaps can comprise the information of base station and/or angle of departure direction.Base station information can be the sign indicating number that can be used for determining base station location in map or table, the perhaps positional information of base station.
The base station also comprises receiver 201 and transmitter 202, in order to finish the practical operation of wireless system.Say that more clearly base station receiver comprises antenna 50, duplex apparatus 51 transmits and receives direction, the radio-frequency unit 52 of receiver and demodulator 53 with separation.Transmitter side comprises modulator 55 and radio-frequency unit 54, and signal propagates into duplex apparatus 51 from radio-frequency unit 54.The also further processing signals of microprocessor is to mail to fixed network.
Because can repeat to determine the position of terminal in difference constantly by the innovation scheme, so the solution of the present invention also can be used for determining moving of terminal.
Although example has below in conjunction with the accompanying drawings been described the present invention, obviously the present invention is not limited thereto, can be improved by many modes in the scope of the disclosed innovative idea of appended claim book.

Claims (28)

1. determine a kind of localization method of terminal (12) position in wireless system, aforementioned wireless system comprises a plurality of base stations (10,11) and terminal (12), it is characterized in that this method comprises following method step:
The base station of-at least two known location (10,11) sends the signal that is used for locating terminal (12);
-these signals send in beam (13,14) with directional antenna pattern;
The direction of-beam (13,14) changes in time;
-terminal (12) is measured described at least two base stations (10,11) transmission, and the signal that is used to locate is determined the position of described base station (10,11) and the transmit direction of the signal that is used to locate according to measurement result,
-determine the position of terminal (12) according to the transmit direction of the position of base station (10,11) and the signal that is used to locate.
2. according to the method for claim 1, it is characterized in that, make the used signal beam in location (13,14) around base station (10,11) rotation at the sub-district level, thereby the direction of beam (13,14) changes in time.
3. according to the method for claim 2, it is characterized in that, terminal (12) is the used signal of measurement and positioning in 360 ° at least one whole circle, and the timing that utilizes received signal is determined by from the base station (10,11) signal of propagating to the directapath of terminal (12), thus the influence that multipath transmisstion produces reduced.
4. according to the method for claim 2, it is characterized in that the anglec of rotation speed ω of beam (13,14) is stable, in this case, beam (13,14) direction during moment T in the initial rotation circle is ω T, when beginning is enclosed in ensuing at least one rotation, beam (13,14) directed change phase shift φ, beam (13, the 14) direction of T is ω T+ φ constantly.
5. according to the method for claim 1, it is characterized in that in order to determine the major axes orientation of beam (13,14), the density distribution or the similar parameter of terminal (12) measurement beam (13,14) in a circle utilize main shaft to determine the position of terminal (12).
6. according to the method for claim 1, it is characterized in that the density distribution of terminal (12) measurement beam (13,14) in multi-turn or similar parameter utilize main shaft to determine the position of terminal (12) to determine major axes orientation.
7. according to the method for claim 1, it is characterized in that if (10,11) rotate a whole circle to beam (13,14) around the base station in a tdma frame, then base station (10,11) send in the time-division tdma frame.
8. according to the method for claim 1, it is characterized in that,, locate used signal and comprise base station (10,11) information and sense angle information in order to determine the position of terminal (12).
9. according to the method for claim 1, it is characterized in that, locate used signal and comprise base station (10,11) information, base station (10,11) and terminal (12) are synchronous, thereby make the time of reception and the angle of departure be relative to each other, the time of reception of the used signal of terminal (12) measurement and positioning, thus determine the angle of departure.
10. according to the method for claim 1, it is characterized in that network portion comprises the other parts except terminal (12) in the wireless system, if terminal (12) transmits its metrical information to network portion, determines the position of terminal (12) in network portion.
11. the method according to claim 10 is characterized in that, transmits locating information by wireless path to terminal (12) from network.
12. the method according to claim 1 is characterized in that, terminal (12) is determined it self position.
13. the method according to claim 1 is characterized in that, in the gsm wireless system, locating used signal can send by the BCCH channel, and the frequency and the gap information of the used signal in location perhaps is provided by the BCCH channel.
14. the method according to claim 1 is characterized in that, sends the used signal in location on the frequency in one or more time slots.
15. determine a kind of positioner of terminal location in the wireless system, aforementioned wireless system comprises a plurality of base stations (10,11) and terminal (12), it is characterized in that,
The base station of at least two known location (10,11) comprises sending being used for the signal of locating terminal (12), and has the transmitter (101) of directional beam (13,14) that this transmitter (101) changes the direction of beam (13,14) in time;
Terminal (12) comprises the device (46) that is used for measuring-signal in the receiver, and these signals are used for determining the angle of departure of the used signal in position, base station (10,11) and location, and
Wireless system comprises that the measurement of being carried out according to terminal (12) determines the device (34) of terminal (12) position.
16. the device according to claim 15 is characterized in that, the transmitter (101) of base station (10,11) makes signal beam (13,14) around base station (10,11) rotation at the sub-district level, thereby the direction of signal beam (13,14) changes in time.
17. device according to claim 15, it is characterized in that, terminal (12) is the used signal of measurement and positioning in 360 ° at least one whole circle, this device utilizes the timing of received signal to determine by from the base station (10,11) signal of propagating to the directapath of terminal (12), thus the influence that multipath transmisstion produces reduced.
18. the device according to claim 15 is characterized in that, base station (10,11) transmitter (101) is with angular speed ω rotating beam (13 stably, 14), in this case, the beam (13 during moment T in the initial rotation circle, 14) direction is ω T, when ensuing at least one rotation circle began, transmitter (101) was with the directed change phase shift φ of beam (13,14), beam (13,14) direction at each moment T is ω T+ φ.
19. the device according to claim 18 is characterized in that, for the direction of definite main shaft and the position of terminal (12), and the density distribution or the similar parameter of terminal (12) measurement beam (13,14) in a circle.
20. the device according to claim 18 is characterized in that, in order to determine the direction of main shaft and the position of terminal (12), the density distribution of terminal (12) measurement beam (13,14) or similar parameter in multi-turn.
21. the device according to claim 15 is characterized in that, if base station (10,11) send in the time-division tdma frame, then (10,11) rotate a whole circle to the transmitter (101) of base station (10,11) around the base station with beam (13,14) in a tdma frame.
22. the device according to claim 15 is characterized in that, in order to determine the position of terminal (12), the used signal in location that the transmitter (101) of base station (10,11) is sent comprises base station (10,11) information and sense angle information.
23. device according to claim 15, it is characterized in that, base station (10,11) the used signal in location that transmitter (101) is sent comprises base station (10,11) information, base station (10,11) and terminal (12) are synchronous, thereby make the time of reception of signal and the angle of departure be relative to each other in a known way, the time of reception of the used signal of terminal (12) measurement and positioning.
24. device according to claim 18, it is characterized in that, network portion comprises the other parts except terminal (12) in the wireless system, if terminal (12) transmits its metrical information to network portion, comprises the device (34) of definite terminal (12) position in network portion.
25. the method according to claim 24 is characterized in that, network portion transmits the positional information of terminal (12) by wireless path.
26. the device according to claim 15 is characterized in that, terminal (12) comprises the device (34) of determining its self-position.
27. device according to claim 15, it is characterized in that, in the gsm wireless system, base station (10,11) transmitter (101) sends by the BCCH channel and sends the used signal in location, and the frequency and the gap information of the used signal in location perhaps is provided by the BCCH channel.
28. the device according to claim 15 is characterized in that, sends the used signal in location on the frequency of the transmitter (101) of base station (10,11) in one or more time slots.
CN98802469A 1997-12-11 1998-12-10 Locating method and arrangement Pending CN1250582A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI974494A FI105597B (en) 1997-12-11 1997-12-11 Location procedure and location arrangement
FI974494 1997-12-11

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CN1250582A true CN1250582A (en) 2000-04-12

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Application Number Title Priority Date Filing Date
CN98802469A Pending CN1250582A (en) 1997-12-11 1998-12-10 Locating method and arrangement

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US (1) US6484031B1 (en)
EP (1) EP0960548A2 (en)
JP (1) JP2001511338A (en)
CN (1) CN1250582A (en)
AU (1) AU1490899A (en)
FI (1) FI105597B (en)
NO (1) NO993838L (en)
WO (1) WO1999033302A2 (en)

Cited By (8)

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CN1305325C (en) * 2002-05-23 2007-03-14 株式会社Ntt都科摩 Wireless communication method, base station and receiving terminal
CN1326417C (en) * 2001-10-10 2007-07-11 罗克马诺尔研究有限公司 Method of estimated transmission to angle in mobile terminal
CN100486389C (en) * 2002-07-11 2009-05-06 株式会社日立制作所 Position mensuration method
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AU1490899A (en) 1999-07-12
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NO993838D0 (en) 1999-08-10
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